Photograph of animal tracks in the dirt at Big Bend National Park, during a river rafting trip led by Steven Fromholz and Craig Hillis in November 2002. The prints start in the center bottom portion of the photograph, and lead up and to the right. Large cracks can be seen in the dirt.

Photograph of animal tracks in the dirt at Big Bend National Park, during a river rafting trip led by Steven Fromholz and Craig Hillis in November 2002. Large cracks can be seen in the dirt. Someone's feet can be seen in the top right corner of the photograph, wearing sandals.

Photograph of animal tracks in the dirt at Big Bend National Park, during a river rafting trip led by Steven Fromholz and Craig Hillis in November 2002. Hoof and paw prints can both be seen in the dirt. Patches of grass are surrounding the dirt on either side of the photograph.

Photograph of camping gear at Big Bend National Park during a river rafting trip led by Steven Fromholz and Craig Hillis in November 2002. A sleeping bag has been laid out over a tarp. A camo jacket is folded up on the sleeping bag. Sweatpants and a ballcap are sitting on top of a duffle bag in the bottom right portion of the photograph. A backpack and a lawn chair with two mugs on it can also be seen on the right side of the photograph.

Photograph of a canyon at Big Bend National Park during a river rafting trip led by Steven Fromholz and Craig Hillis in November 2002. Grass and rocks can be seen at the base of the canyon. Part of the river can be seen flowing in the bottom right corner of the photograph.

Photograph of a canyon at Big Bend National Park during a river rafting trip led by Steven Fromholz and Craig Hillis in November 2002. Tall grass can be seen at the base of the canyon in the bottom portion of the photograph.

Photograph of a canyon cliff at Big Bend National Park, during a river rafting trip led by Steven Fromholz and Craig Hillis in November 2002. Tall grass can be seen at the base of the canyon, next to the Rio Grande River.

Photograph of a canyon cliff during a river rafting trip in Big Bend National Park, led by Steven Fromholz and Craig Hillis in November 2002.

Photograph of a canyon cliff during a river rafting trip in Big Bend National Park, led by Steven Fromholz and Craig Hillis in November 2002.

Photograph of a canyon cliff at Big Bend National Park, during a river rafting trip led by Steven Fromholz and Craig Hillis in November 2002. Tall grass and shrubs can be seen lining the base of the cliff at the bottom of the photograph.

Photograph of a canyon cliff at Big Bend National Park, during a river rafting trip led by Steven Fromholz and Craig Hillis in November 2002. A steep slope can be seen in the canyon in the center of the photograph. Tall grass is lining the base of the canyon in the bottom portion of the photograph.

Photograph of a canyon cliff at Big Bend National Park, during a river rafting trip led by Steven Fromholz and Craig Hillis in November 2002. A steep slope can be seen in the cliff, beginning on the left side of the photograph. Tall grass is lining the base of the canyon.

Photograph of a cliff tunnel at Big Bend National Park, during a river rafting trip led by Steven Fromholz and Craig Hillis in November 2002. Cliff walls can be seen on either side of the photograph. A large rock has been sandwiched between the two walls, creating an opening in the center of the photograph. Water is running through the tunnel.

Photograph of cliffs along the Rio Grande River, during a river rafting trip led by Steven Fromholz and Craig Hillis in November 2002. Beneath the cliffs, tall shrubs and desert trees can be seen lining the river.

Photograph of mountain cliffs during a river rafting trip in Big Bend National Park, led by Steven Fromholz and Craig Hillis in November 2002. Tall grass can be seen beneath the mountains at the bottom of the photograph.

Photograph of mountain cliffs during a river rafting trip in Big Bend National Park, led by Steven Fromholz and Craig Hillis in November 2002. Tall grass can be seen in the foreground of the photograph, partially blocking the cliffs from view.

Photograph of cliffs at Big Bend National Park, during a river rafting trip led by Steven Fromholz and Craig Hillis in November 2002. A cave opening can be seen in the center of the cliff wall. The Rio Grande River can be seen running alongside the cliffs at the bottom of the photograph. Two canoes are present in the river.

Photograph of cliffs at Big Bend National Park, during a river rafting trip led by Steven Fromholz and Craig Hillis in November 2020.

Photograph of cliffs at Big Bend National Park, during a river rafting trip led by Steven Fromholz and Craig Hillis in November 2002. Tall grass is lining the base of a cliff wall on the right side of the photograph. People can be seen canoeing in the Rio Grande River at the bottom of the photograph.

Photograph of a couple during a river rafting trip in Big Bend National Park, led by Steven Fromholz and Craig Hillis in November 2002. They are sitting down at the base of a cliff, facing to the left and looking at the camera. The woman has her arms wrapped around the man. The man is resting his left hand on the woman's knee. A stream can be seen running in the bottom left corner of the photograph.

Photograph of a couple at Big Bend National Park during a river rafting trip led by Steven Fromholz and Craig Hillis in November 2002. They are standing side by side with their arms around each other's shoulders. The man (left) is looking at the camera. The woman (right) is looking to the right of the camera and smiling slightly. She has her left hand on her hip. Trees and other greenery can be seen in the background.

Photograph of Craig Hillis (left) and Steven Fromholz (right) at Terlingua Cemetery during a river rafting trip in November 2002. They are both looking at the camera and smiling.

Photograph of Craig Hillis at Terlingua Cemetery during a river rafting trip with Steven Fromholz in November 2002. He is looking at the camera and smiling. Building structures can be seen among the desert landscape and mountains in the background of the photograph.

Photograph of downtown Lajitas, Texas during a river rafting trip led by Steven Fromholz and Craig Hillis in November 2002. A business strip spans the photograph horizontally. The sign closest to the camera reads, "Frontier Drug Company."